A farm would be so cool man, I found this guy from Australia on YouTube last week, his channel is called self sufficiant me. He grows tons of different kinds of food, I ended up watching a bunch of his videos he's really informative and funny
He's a Florida Cooter turtle, he's cool man I've had him since I was 11 so he's about 16/ 17 now, when I first got him he could only come out of the water for an hour but now, he could stay out for a day or more basking under his light. Pretty friendly, but he likes to do his own thing.
It's funny, they're renowned for being a bit destructive. I got him a bunch of ornements and plants for his tank and he just destroyed them all and had rearranged it by the next morning, some of the things he even buried. They're really controling about their tanks.
That is so cool. I think it would be cool to have some turtles and other animals that just roam the land.
I had this idea for him, that when I get my own place I would build a pond underneath a decking with a hatchs I could open to feed him, made of glass so I could look into it. With light fittings for a heat lamp above an island in the centre of the pond for him to bask. Also a pump and heaters since it's Ireland.
I got a paddling pool last summer to give him a bigger place to swim while I was doing stuff outside. But, I looked up after a while and there were two sea-gulls circling above it so I decided the pool was maybe a bad idea.
Hopefully you can figure something out for him.